fetching data from APIInvokationError

Summary:

hi all , pls advice ASAP.

OIC, gen2 ,i call to REST/SOAP and it retrive me the error.i am catching the error with FAULT HANDLER .

i success to get "title" and "errorCode" from retrieved data (see colored in yellow below picture)

my question is " How do i get all rest text colored in yellow on attached picture from "instance" tag???".

i want to sent to support a readable and understandable email with text that they know what was an issue and go to fix it.

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